Add v2.12.0 Release Notes (#1092) (#1106)

(cherry picked from commit 8530939)

Signed-off-by: Rohit Ashiwal <rashiwal@amazon.com>
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

release-notes/opensearch-index-management.release-notes-2.12.0.0.md

@@ -0,0 +1,36 @@
+## Version 2.12.0.0 2024-02-07
+
+Compatible with OpenSearch 2.12.0
+
+### Maintenance
+
+* Increment version to 2.12.0-SNAPSHOT ([#996](https://github.com/opensearch-project/index-management/pull/996))
+* Update to Gradle 8.5 ([#1069](https://github.com/opensearch-project/index-management/pull/1069))
+* Support switch aliases in shrink action. ([#987](https://github.com/opensearch-project/index-management/pull/987))
+
+### Enhancements
+
+* Implemented filtering on the ISM eplain API ([#1067](https://github.com/opensearch-project/index-management/pull/1067))
+* Add more error notification at fail points ([#1000](https://github.com/opensearch-project/index-management/pull/1000))
+* \[Feature] Support Transform as an ISM action ([#760](https://github.com/opensearch-project/index-management/pull/760))
+* Set the rollover action to idempotent ([#986](https://github.com/opensearch-project/index-management/pull/986))
+
+
+### Bug fixes
+
+* GET SM policies return empty list when ism config index does not exist ([#1072](https://github.com/opensearch-project/index-management/pull/1072))
+* Added minimum timeout for transforms search of 10 minutes ([#1033](https://github.com/opensearch-project/index-management/pull/1033))
+* Interval schedule should take start time from the request, should not… ([#1040](https://github.com/opensearch-project/index-management/pull/1040))
+* Added minimum for search.cancel_after_time_interval setting for rollups ([#1026](https://github.com/opensearch-project/index-management/pull/1026))
+* Interval schedule should take start time from the request, should not set it to the current time of request execution. ([#1036](https://github.com/opensearch-project/index-management/pull/1036))
+* added type check for pipeline aggregator types in Transform initialization ([#1014](https://github.com/opensearch-project/index-management/pull/1014))
+
+### Infrastructure
+
+* Update admin credential in integration test ([#1084](https://github.com/opensearch-project/index-management/pull/1084))
+* Onboard jenkins prod docker images to github actions ([#1025](https://github.com/opensearch-project/index-management/pull/1025))
+* Improve security plugin enabling check ([#1017](https://github.com/opensearch-project/index-management/pull/1017))
+
+### Documentation
+
+* Version 2.12 Release Notes Draft ([#1092](https://github.com/opensearch-project/index-management/pull/1092))